The Arizona Cardinals have officially ruled out running back Chase Edmonds for their Week 18 home matchup against the Seattle Seahawks.

Edmonds entered the Cardinals’ Week 17 road clash with the Dallas Cowboys dealing with a back injury. Even as he was not a full participant in practice over the week, Cardinals head coach Kliff Kingsbury opted to feature him in the contest, as he went on to record 82 yards from scrimmage.

Injuries once again hampered Edmonds’ availability in practice, as the versatile back did not take part in a single session this week due to his rib and toe injuries.

Kingsbury did note on Monday that he wants to be “smart” as to Edmonds’ possible availability for the NFC West matchup with the Seahawks, but in the big picture, he much prefers to have him fully fit in time for the Cardinals’ playoff opener.

Even after listing him as “day-to-day” earlier in the week, Kingsbury has now opted to rule him out for Week 18.

The Cardinals also decided to place an injury designation of questionable on running back James Conner. He has not featured for Arizona since the Week 15 road loss to the Detroit Lions due to a heel injury. At the least, he made his return to practice on Friday, where he was a limited participant throughout the session.

If Conner ends up being ruled out this week, Kingsbury will at the least have running backs Eno Benjamin and Jonathan Ward available at his disposal. They each combined for a mere six rushing yards in the road win against the Cowboys.

The Cardinals need a win over the Seahawks coupled with a Los Angeles Rams defeat to the San Francisco 49ers in order to clinch the NFC West in Week 18.